US20160123113A1 - Flow-Activated Flow Control Device and Method of Using Same in Wellbore Completion Assemblies - Google Patents
Flow-Activated Flow Control Device and Method of Using Same in Wellbore Completion Assemblies Download PDFInfo
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- US20160123113A1 US20160123113A1 US14/530,394 US201414530394A US2016123113A1 US 20160123113 A1 US20160123113 A1 US 20160123113A1 US 201414530394 A US201414530394 A US 201414530394A US 2016123113 A1 US2016123113 A1 US 2016123113A1
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- fluid
- completion assembly
- closing
- wellbore
- flow path
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- 238000000034 method Methods 0.000 title claims description 20
- 230000000712 assembly Effects 0.000 title description 2
- 238000000429 assembly Methods 0.000 title description 2
- 239000012530 fluid Substances 0.000 claims abstract description 68
- 230000015572 biosynthetic process Effects 0.000 claims description 16
- 230000001351 cycling effect Effects 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 6
- 230000001934 delay Effects 0.000 claims 2
- 238000005755 formation reaction Methods 0.000 description 13
- 238000002955 isolation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
- E21B34/108—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole with time delay systems, e.g. hydraulic impedance mechanisms
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/082—Screens comprising porous materials, e.g. prepacked screens
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Definitions
- This disclosure relates generally to completion assemblies or strings used in treating production zones and for producing formation fluids.
- Wellbores are drilled in subsurface formations for the production of hydrocarbons (oil and gas). Hydrocarbons are trapped in various sections or traps in the subsurface formations at different depths. Such sections are referred to as reservoirs or hydrocarbon-bearing formations or zones. Often multiple spaced-apart zones exist along wellbores, several hundred feet apart from each other. Stimulation methods are often employed to improve the mobility of the hydrocarbons through the production zones.
- One such method referred to as fracturing (also referred to as “fracing” or “fracking”), is often employed to create cracks in the reservoir, enabling the fluid from the formation (formation fluid) to flow from the reservoir into the wellbore.
- a majority of wellbores are lined with a casing and contain a sump packer below the lowest zone.
- a completion assembly having a number of devices corresponding to each zone, such as packers, valves and sand screens, etc., is run into the wellbore.
- the bottom end of the completion assembly is stabbed into the sump packer to provide tubing isolation to set the packers against the casing.
- no sump packer is available to isolate the tubing of the completion assembly to set the packers against the formation.
- the disclosure herein provides a completion assembly that includes a flow control device that may be activated after the assembly has been run into the wellbore to a desired depth.
- a completion assembly for use in a wellbore includes a tubular member having at least one packer to isolate a zone between the completion assembly and the wellbore and a flow control device for closing the flow of a fluid through the tubular member, the flow control device including a valve that includes a fluid flow path and a seal member configured to close the fluid flow path, and a fluid-activated device that cycles each time a pressure differential is created across the fluid flow path and moves the seal member to close the valve after completion of a selected number of cycles.
- the disclosure further provides a method of completing a wellbore that in one-non-limiting embodiment includes: providing a completion assembly that includes a tubular member having at least one packer to isolate a zone between the completion assembly and the wellbore and a flow control device below the at least one packer for closing the flow of a fluid through the tubular member, wherein the flow control device includes a valve having a fluid flow path and a seal member configured to close the fluid flow path and a fluid-activated device that cycles each time a pressure differential is created across the fluid flow path and moves the seal member to close the valve after completion of a selected number of cycles; running in the completion assembly in the wellbore with the valve in an open position; and creating pressure differential across the fluid flow path a selected number of times to close the flow of the fluid through the tubular.
- FIG. 1 shows an exemplary open-hole multi-zone wellbore system with a completion assembly run into the wellbore that includes a flow control device to isolate the completion assembly from the annulus between the completion assembly and the wellbore, according to one non-limiting embodiment of the disclosure
- FIG. 2 shows an non-limiting embodiment of a flow control device in an open position for use in a completion assembly, such as completion assembly of FIG. 1 , for isolating the annulus between the completion assembly and an open hole wellbore;
- FIG. 2A shows an exemplary cycling device that may be utilized in the flow control device of FIG. 2 to close the flow of a fluid through the completion assembly after a selected number of pressure cycles;
- FIG. 3 shows the flow-activated device of FIG. 2 in an intermediate position
- FIG. 3A shows the position of the pin in a slot of the cycling device when the flow control device is in an intermediate or partially closed position as shown in FIG. 3 ;
- FIG. 4 shows the flow-activated device of FIG. 2 in the closed position
- FIG. 4A shows the position of the pin in a slot of the cycling device when the flow control device is in the closed position as shown in FIG. 4 .
- FIG. 1 is a line diagram of an open hole wellbore system 100 that includes a wellbore 101 formed in formation 102 for performing a treatment operation therein, such as fracturing the formation (also referred to herein as fracing or fracking), gravel packing, flooding, etc.
- An upper section 101 a of the wellbore 101 is lined with casing 104 and the annulus 103 between the casing 104 and the wellbore 101 is filled with cement 106 to stabilize the upper section 101 a of the formation 102 .
- the lower section 101 b of the wellbore 101 below the casing 104 is an open hole.
- the wellbore 101 may include any number of production zones.
- the wellbore 101 is shown to include two zones: a lower zone Z 1 and an upper zone Z 2 .
- a completion assembly 120 is run in or placed in the wellbore 101 to a suitable depth.
- the completion assembly 120 includes a lower packer 124 proximate to a bottom end 120 a of the completion assembly 120 and an isolation packer corresponding to each zone for isolating its associated zone from the other zones.
- zone Z 1 is shown to include an isolation packer 124 a and zone Z 2 an isolation packer 124 b .
- the completion assembly 120 includes a sand screen S 1 below packer 124 a corresponding to zone Z 1 and screen S 2 below packer 124 b corresponding to zone Z 2 .
- a monitoring valve 144 a in the screen assembly S 1 provides fluid communication between the formation 102 and inside 120 a of the completion assembly 120 for zone Z 1 and a monitoring valve 144 b in the screen assembly S 2 provides fluid communication between the formation 102 and inside 120 a of the completion assembly 120 for zone Z 2 .
- a valve such as a sleeve valve also referred to as frac sleeve 140 a is provided between the packer 124 a and the screen S 1 for supplying a treatment fluid to zone Z 1 while a frac sleeve 140 b is provided for supplying the treatment fluid to zone Z 2 .
- frac sleeve 140 a For hydraulically-set packers the inside 120 a of the completion assembly 120 is pressurized by a fluid 150 from the surface. However, prior to such treatment operation, it is necessary to stop flow of any fluid through the completion assembly 120 so that the fluid supplied under pressure to the completion assembly 120 will act on the hydraulically-activated packers 124 a and 124 b to set such packers.
- the present disclosure provides a fluid-activated flow control device 180 below the isolation packers that remains open when the completion assembly 120 is run into the wellbore 101 and which can be closed after the completion assembly 120 has been placed or run into the wellbore to the desired depth.
- a non-limiting embodiment of a flow control device for use in a completion assembly including, but not limited to the completion assembly 120 of FIG. 1 , is described in reference to FIGS. 2-4 .
- FIG. 2 shows a non-limiting embodiment of a flow-control device 200 (also referred to herein as the “reversing valve”) in an open position for use in a completion assembly, such as completion assembly 120 of FIG. 1 , for isolating annulus 105 between the completion assembly 100 and wellbore 101 .
- FIG. 2A shows a flow-activated cycling device 250 for use in closing the flow control device 200 after a selected number of pressure cycles.
- the device 200 includes an upper housing 210 connected to a lower housing 212 at a connection 214 , such as threads.
- the upper housing 210 may be coupled to a suitable location in the completion string 100 by a top sub 216 .
- the device 200 includes a valve 220 and a valve closing device or flow closing device 230 .
- the valve 220 includes a valve body 222 and a closing member such as seal 224 , separated from the valve body 222 by a closable gap 225 .
- a nozzle 240 at an upper end 222 a of the valve body 222 provides a fluid path 215 from a location uphole of the device 200 to the valve body 222 .
- the valve body 222 includes a number of radial openings 223 that allow a fluid to flow out of the valve body as shown by arrows 226 .
- the closing device 230 includes a mandrel 260 inside the lower housing 212 that includes fluid openings 262 , such as in the form of holes or slots.
- the closing device 230 further includes a hydraulically-activated closing device or mechanism that in one non-limiting embodiment includes a slot-pin device or cycling device that includes a j-slot locking cap or lock cap 250 and a pin 255 .
- the lock cap 250 includes a number of longitudinal slots 252 a , 252 b . . . 252 n that move about the pin 255 .
- At least one slot corresponds to the closing position of the flow control device 200 while the remaining slots, such as slots 250 a , 250 b , etc., correspond to the open position or partially open position of the flow control device 200 as described later.
- the pin 255 is fixed to the outer housing 212 while the lock cap 250 moves axially and radially as the slots 250 a - 250 n move about the pin 255 .
- the lock cap 250 is placed on an upper end 260 a of the mandrel 260 and it moves about the pin 255 when pressure above a certain threshold is applied to the upper end 250 a of the lock cap 250 (i.e., when a pressure differential above a certain threshold is created across the lock cap 250 ).
- a biasing member such as a spring 270
- a spring 270 between the lower end 250 b of the locking cap 250 and a spring retainer 272 applies a constant upward force to the lock cap 250 .
- a bearing 264 may be provided between the spring retainer 272 and the lower end 270 a of the spring 270 .
- valve body 222 moves downward, causing the connecting member 228 to move the lock cap 250 downward, compressing the spring 270 .
- the lock cap 250 will move axially downward and rotate as the slot or track 250 b moves about the pin 255 .
- the lock cap 250 will stop moving when the pin 270 is at the bottom end 252 b of the slot 250 b .
- the valve body 222 will move toward the seal member 224 a certain distance, as shown in FIG. 3 .
- the spring 270 will cause the lock cap 250 to attain a position in one of the non-closing slots, as shown in FIG.
- the lock cap 250 will move about the pin 255 to attain the partially closed position as shown in FIG. 3 and then the open position of FIG. 2 . If, for example, there are four non-closing slots, such as slots 250 a , 250 b and followed by a closing slot, such as slot 250 n , then for the first four pressure cycles, the lock cap 250 will move between open position of FIG. 2 and partially closed position of FIG. 3 . On the next pressure cycle, the lock cap 250 will move about the closing slot 250 n , which is longer than the non-closing slots, thereby causing the seal member 228 to seal the valve body 222 as shown in FIG.
- a delay device or mechanism may be provided to delay the application of the fluid pressure on the valve 220 (i.e., the device will not cycle to the next slot until a threshold rate is created and maintained for a specified period of time 220 ).
- a delay device may be coupled to the flow control device 200 in any suitable manner to delay each cycle of the closing device by a selected or predetermined time period. Delay devices, including metering devices, are available in the art and are thus not described herein.
- the flow control device 180 is closed as described above and the packer 124 and 124 a are set to isolate zone Z 1 from the other zones.
- a service string or assembly (known in the art and thus not shown) is placed inside the completion assembly 120 and manipulated to open the monitoring valve 144 a to establish fluid communication between the formation 101 and inside 120 a of the completion string 120 .
- the frac sleeve 140 a is opened to provide fluid communication from inside 120 a of the completion assembly 120 to the zone Z 1 .
- a treatment fluid, such as slurry or another fluid is supplied under pressure to zone Z 1 via the service string and the frac sleeve 140 a .
- zone Z 2 is then treated in the manner described above for zone Z 1 .
- Such treatment operations are known in the art and are thus not described in detail herein.
Abstract
A completion assembly for use in a wellbore is disclosed that in one non-limiting embodiment includes a tubular member having at least one packer to isolate a zone between the completion assembly and the wellbore, and a flow control device for closing flow of fluid through the tubular member, the flow control device including a valve that includes a fluid flow path and a seal member configured to close the fluid flow path, and a fluid-activated device that cycles each time a pressure differential is created across the flow path and moves the seal member to close the valve after completion of a selected number of cycles.
Description
- 1. Field of the Disclosure
- This disclosure relates generally to completion assemblies or strings used in treating production zones and for producing formation fluids.
- 2. Background of the Art
- Wellbores are drilled in subsurface formations for the production of hydrocarbons (oil and gas). Hydrocarbons are trapped in various sections or traps in the subsurface formations at different depths. Such sections are referred to as reservoirs or hydrocarbon-bearing formations or zones. Often multiple spaced-apart zones exist along wellbores, several hundred feet apart from each other. Stimulation methods are often employed to improve the mobility of the hydrocarbons through the production zones. One such method, referred to as fracturing (also referred to as “fracing” or “fracking”), is often employed to create cracks in the reservoir, enabling the fluid from the formation (formation fluid) to flow from the reservoir into the wellbore. A majority of wellbores are lined with a casing and contain a sump packer below the lowest zone. To treat the zones, a completion assembly having a number of devices corresponding to each zone, such as packers, valves and sand screens, etc., is run into the wellbore. The bottom end of the completion assembly is stabbed into the sump packer to provide tubing isolation to set the packers against the casing. In open-hole well systems, no sump packer is available to isolate the tubing of the completion assembly to set the packers against the formation. Therefore, there is a need to provide a device below the lowermost packer in a completion assembly that will remain open when the completion assembly is run into the wellbore and that can be closed once the completion assembly has been run to a desired wellbore depth, in order to set the packers to isolate the production zones prior to treating such zones.
- The disclosure herein provides a completion assembly that includes a flow control device that may be activated after the assembly has been run into the wellbore to a desired depth.
- A completion assembly for use in a wellbore is disclosed that in one non-limiting embodiment includes a tubular member having at least one packer to isolate a zone between the completion assembly and the wellbore and a flow control device for closing the flow of a fluid through the tubular member, the flow control device including a valve that includes a fluid flow path and a seal member configured to close the fluid flow path, and a fluid-activated device that cycles each time a pressure differential is created across the fluid flow path and moves the seal member to close the valve after completion of a selected number of cycles.
- The disclosure further provides a method of completing a wellbore that in one-non-limiting embodiment includes: providing a completion assembly that includes a tubular member having at least one packer to isolate a zone between the completion assembly and the wellbore and a flow control device below the at least one packer for closing the flow of a fluid through the tubular member, wherein the flow control device includes a valve having a fluid flow path and a seal member configured to close the fluid flow path and a fluid-activated device that cycles each time a pressure differential is created across the fluid flow path and moves the seal member to close the valve after completion of a selected number of cycles; running in the completion assembly in the wellbore with the valve in an open position; and creating pressure differential across the fluid flow path a selected number of times to close the flow of the fluid through the tubular.
- Examples of the more important features of a well treatment system and methods that have been summarized rather broadly in order that the detailed description thereof that follows may be better understood, and in order that the contributions to the art may be appreciated. There are, of course, additional features that will be described hereinafter and which will form the subject of the claims.
- For a detailed understanding of the apparatus and methods disclosed herein, reference should be made to the accompanying drawings and the detailed description thereof, wherein like elements are generally given same numerals and wherein:
-
FIG. 1 shows an exemplary open-hole multi-zone wellbore system with a completion assembly run into the wellbore that includes a flow control device to isolate the completion assembly from the annulus between the completion assembly and the wellbore, according to one non-limiting embodiment of the disclosure; -
FIG. 2 shows an non-limiting embodiment of a flow control device in an open position for use in a completion assembly, such as completion assembly ofFIG. 1 , for isolating the annulus between the completion assembly and an open hole wellbore; -
FIG. 2A shows an exemplary cycling device that may be utilized in the flow control device ofFIG. 2 to close the flow of a fluid through the completion assembly after a selected number of pressure cycles; -
FIG. 3 shows the flow-activated device ofFIG. 2 in an intermediate position; -
FIG. 3A shows the position of the pin in a slot of the cycling device when the flow control device is in an intermediate or partially closed position as shown inFIG. 3 ; -
FIG. 4 shows the flow-activated device ofFIG. 2 in the closed position; and -
FIG. 4A shows the position of the pin in a slot of the cycling device when the flow control device is in the closed position as shown inFIG. 4 . -
FIG. 1 is a line diagram of an open holewellbore system 100 that includes a wellbore 101 formed in formation 102 for performing a treatment operation therein, such as fracturing the formation (also referred to herein as fracing or fracking), gravel packing, flooding, etc. An upper section 101 a of the wellbore 101 is lined withcasing 104 and theannulus 103 between thecasing 104 and the wellbore 101 is filled with cement 106 to stabilize the upper section 101 a of the formation 102. The lower section 101 b of the wellbore 101 below thecasing 104 is an open hole. The wellbore 101 may include any number of production zones. For explanation purposes only and not as any limitation, the wellbore 101 is shown to include two zones: a lower zone Z1 and an upper zone Z2. To treat the zones Z1 and Z2, acompletion assembly 120 is run in or placed in the wellbore 101 to a suitable depth. In one non-limiting embodiment, thecompletion assembly 120 includes alower packer 124 proximate to a bottom end 120 a of thecompletion assembly 120 and an isolation packer corresponding to each zone for isolating its associated zone from the other zones. InFIG. 1 , zone Z1 is shown to include anisolation packer 124 a and zone Z2 an isolation packer 124 b. Thecompletion assembly 120 includes a sand screen S1 belowpacker 124 a corresponding to zone Z1 and screen S2 below packer 124 b corresponding to zone Z2. Amonitoring valve 144 a in the screen assembly S1 provides fluid communication between the formation 102 and inside 120 a of thecompletion assembly 120 for zone Z1 and a monitoring valve 144 b in the screen assembly S2 provides fluid communication between the formation 102 and inside 120 a of thecompletion assembly 120 for zone Z2. A valve, such as a sleeve valve also referred to asfrac sleeve 140 a is provided between thepacker 124 a and the screen S1 for supplying a treatment fluid to zone Z1 while a frac sleeve 140 b is provided for supplying the treatment fluid to zone Z2. For hydraulically-set packers the inside 120 a of thecompletion assembly 120 is pressurized by afluid 150 from the surface. However, prior to such treatment operation, it is necessary to stop flow of any fluid through thecompletion assembly 120 so that the fluid supplied under pressure to thecompletion assembly 120 will act on the hydraulically-activatedpackers 124 a and 124 b to set such packers. Also, during run in of thecompletion assembly 120 into the well bore 101, forward flow of the fluid is necessary, i.e., it is necessary that thefluid 150 flows through the completion assembly, as shown by arrows 160. The present disclosure provides a fluid-activatedflow control device 180 below the isolation packers that remains open when thecompletion assembly 120 is run into the wellbore 101 and which can be closed after thecompletion assembly 120 has been placed or run into the wellbore to the desired depth. A non-limiting embodiment of a flow control device for use in a completion assembly, including, but not limited to thecompletion assembly 120 ofFIG. 1 , is described in reference toFIGS. 2-4 . -
FIG. 2 shows a non-limiting embodiment of a flow-control device 200 (also referred to herein as the “reversing valve”) in an open position for use in a completion assembly, such ascompletion assembly 120 ofFIG. 1 , for isolatingannulus 105 between thecompletion assembly 100 and wellbore 101.FIG. 2A shows a flow-activatedcycling device 250 for use in closing theflow control device 200 after a selected number of pressure cycles. Referring now toFIGS. 2 and 2A , thedevice 200 includes anupper housing 210 connected to alower housing 212 at aconnection 214, such as threads. Theupper housing 210 may be coupled to a suitable location in thecompletion string 100 by atop sub 216. Thedevice 200 includes avalve 220 and a valve closing device orflow closing device 230. In one embodiment, thevalve 220 includes avalve body 222 and a closing member such asseal 224, separated from thevalve body 222 by aclosable gap 225. Anozzle 240 at an upper end 222 a of thevalve body 222 provides afluid path 215 from a location uphole of thedevice 200 to thevalve body 222. Thevalve body 222 includes a number ofradial openings 223 that allow a fluid to flow out of the valve body as shown byarrows 226. In the open position, thegap 225 between thevalve body 222 and theseal member 224 exists (i.e., is open), while in the closed position, thegap 224 is closed, as shown inFIG. 4 . Theclosing device 230 includes amandrel 260 inside thelower housing 212 that includesfluid openings 262, such as in the form of holes or slots. Theclosing device 230 further includes a hydraulically-activated closing device or mechanism that in one non-limiting embodiment includes a slot-pin device or cycling device that includes a j-slot locking cap orlock cap 250 and apin 255. Thelock cap 250 includes a number oflongitudinal slots pin 255. At least one slot, such asslot 250 n, corresponds to the closing position of theflow control device 200 while the remaining slots, such as slots 250 a, 250 b, etc., correspond to the open position or partially open position of theflow control device 200 as described later. Thepin 255 is fixed to theouter housing 212 while thelock cap 250 moves axially and radially as theslots 250 a-250 n move about thepin 255. Thelock cap 250 is placed on an upper end 260 a of themandrel 260 and it moves about thepin 255 when pressure above a certain threshold is applied to the upper end 250 a of the lock cap 250 (i.e., when a pressure differential above a certain threshold is created across the lock cap 250). A biasing member, such as aspring 270, between the lower end 250 b of thelocking cap 250 and aspring retainer 272 applies a constant upward force to thelock cap 250. A bearing 264 may be provided between thespring retainer 272 and the lower end 270 a of thespring 270. When theseal member 224 is separated from thevalve body 222, the valve is open and the valve is closed when theseal member 224 is pressed against thevalve body 222. In the open position fluid flows through thedevice 200 as shown byarrows 280 and no fluid or minimal fluid flows through thedevice 200 when the valve is closed. Thevalve body 222 is connected to thelock cap 250 by a member, such asrod 228. - Referring to
FIGS. 3 and 3A , when fluid 215 supplied under pressure exceeds a certain or selected threshold, thevalve body 222 moves downward, causing the connectingmember 228 to move thelock cap 250 downward, compressing thespring 270. In the configuration ofFIG. 2 , thelock cap 250 will move axially downward and rotate as the slot or track 250 b moves about thepin 255. Thelock cap 250 will stop moving when thepin 270 is at thebottom end 252 b of the slot 250 b. Thevalve body 222 will move toward the seal member 224 a certain distance, as shown inFIG. 3 . When the pressure is released, thespring 270 will cause thelock cap 250 to attain a position in one of the non-closing slots, as shown inFIG. 2 , thereby creating thegas 224 as shown inFIG. 2 . Each time the pressure is increased and reduced (cycled), thelock cap 250 will move about thepin 255 to attain the partially closed position as shown inFIG. 3 and then the open position ofFIG. 2 . If, for example, there are four non-closing slots, such as slots 250 a, 250 b and followed by a closing slot, such asslot 250 n, then for the first four pressure cycles, thelock cap 250 will move between open position ofFIG. 2 and partially closed position ofFIG. 3 . On the next pressure cycle, thelock cap 250 will move about theclosing slot 250 n, which is longer than the non-closing slots, thereby causing theseal member 228 to seal thevalve body 222 as shown inFIG. 4 . The position of thepin 255 in theclosing slot 250 n is shown inFIG. 4A . Releasing the pressure on thevalve body 222 will not cause thespring 270 to move the lock cap upward as thepin 255 cannot move out of theextended slot 250 n, thereby permanently closing the flow of the fluid 215 through theflow control device 200 and thus thecompletion assembly 120 shown inFIG. 1 . In some embodiments, a delay device or mechanism may be provided to delay the application of the fluid pressure on the valve 220 (i.e., the device will not cycle to the next slot until a threshold rate is created and maintained for a specified period of time 220). A delay device may be coupled to theflow control device 200 in any suitable manner to delay each cycle of the closing device by a selected or predetermined time period. Delay devices, including metering devices, are available in the art and are thus not described herein. - Referring back to
FIG. 1 , to perform a treatment operation for a zone, such as zone Z1, theflow control device 180 is closed as described above and thepacker completion assembly 120 and manipulated to open themonitoring valve 144 a to establish fluid communication between the formation 101 and inside 120 a of thecompletion string 120. Thefrac sleeve 140 a is opened to provide fluid communication from inside 120 a of thecompletion assembly 120 to the zone Z1. A treatment fluid, such as slurry or another fluid is supplied under pressure to zone Z1 via the service string and thefrac sleeve 140 a. After the treatment operation is complete themonitoring valve 144 a and thefrac sleeve 140 a are closed. The next zone, such as zone Z2 is then treated in the manner described above for zone Z1. Such treatment operations are known in the art and are thus not described in detail herein. - The foregoing disclosure is directed to the certain exemplary embodiments and methods. Various modifications will be apparent to those skilled in the art. It is intended that all such modifications within the scope of the appended claims be embraced by the foregoing disclosure. The words “comprising” and “comprises” as used in the claims are to be interpreted to mean “including but not limited to”. Also, the abstract is not to be used to limit the scope of the claims.
Claims (19)
1. A completion assembly for use in a wellbore, comprising:
a tubular member including at least one packer to isolate a zone between the completion assembly and the wellbore; and
a flow control device for closing flow of a fluid through the tubular member, the flow control device including:
a valve that includes a fluid flow path and a seal member configured to close the fluid flow path; and
a fluid-activated device that cycles each time a pressure differential is created across the flow path and moves the seal member to close the valve after completion of a selected number of cycles.
2. The completion assembly of claim 1 , wherein the pressure differential is created by supplying a fluid under pressure into the tubular.
3. The completion assembly of claim 1 , wherein the flow control device remains open when the completion assembly is run into the wellbore and closes only after the fluid-activated device has cycled the selected number of cycles.
4. The completion assembly of claim 1 , wherein the fluid-activated device includes a locking cap having a plurality of slots non-closing slots and at least one closing slot, wherein applying a predetermined pressure on uphole side of the flow control device causes the plurality of non-closing slots to move axially about a pin without closing the flow path and move the seal member to close the flow path when the at least one closing slot moves about the pin.
5. The completion assembly of claim 4 , wherein the fluid-activated device includes a biasing device that returns lock cap to an initial position when the pressure differential is released from across the flow path.
6. The completion assembly of claim 1 , wherein the flow control device includes a delay device that delays cycling by a selected time period.
7. The completion assembly of claim 5 , wherein the delay device is a hydraulically-operated metering device.
8. The completion assembly of claim 1 further comprising a sand screen below the at least one packer, a frac sleeve between the at least one packer and the sand screen for treating a formation zone in the wellbore with a treatment fluid.
9. The completion assembly of claim 1 , wherein the valve closes permanently after completion of the selected number of cycles.
10. A method of completing a wellbore, the method comprising:
providing a completion assembly that includes a tubular member having at least one packer to isolate a zone between the completion assembly and the wellbore, and a flow control device for closing flow of fluid through the tubular member below the at least one packer that further includes a valve having a fluid flow path and a seal member configured to close the fluid flow path and a fluid-activated device that cycles each time a pressure differential is created across the fluid flow path and moves the seal member to close the valve after completion of a selected number of pressure cycles;
running in the completion assembly in the wellbore with the valve in an open position; and
creating pressure differential across the fluid flow path a selected number of times to close the valve to close the flow of the fluid through the tubular.
11. The method of claim 10 further comprising running the completion assembly into the wellbore to a depth in the wellbore for performing a treatment operation before creating the pressure differential a selected number of times.
12. The method of claim 10 , wherein creating the pressure differential comprises:
supplying a fluid under pressure into the tubular above a selected threshold and releasing the pressure a plurality of times.
13. The method of claim 10 further comprising running in the completion assembly into the wellbore with the flow control device in an open position.
14. The method of claim 10 , wherein the fluid-activated device includes a locking cap having a plurality of non-closing slots, at least one closing slot and a pin about which slots axially move, wherein the method further comprises applying a predetermined pressure on the uphole side of the flow control device to cause the plurality of non-closing slots to axially move about the pin without closing the fluid flow path and then causing the closing slot to move about the pin to close the fluid flow path.
15. The method of claim 14 , wherein the fluid-activated device includes a biasing device that returns the lock cap to an initial position for each of the non-closing slots and locks the locking cap after the closing slot has moved through the pin.
16. The method of claim 14 , wherein the flow control device includes a delay device that delays cycling by a selected time period.
17. The method of 16, wherein the delay device is a hydraulically-activated metering device.
18. The method of claim 10 , wherein the completion assembly further comprises a sand screen below the at least one packer, a frac sleeve between the at least one packer and the sand screen for treating a formation zone in the wellbore with a treatment fluid and wherein the method further comprises:
setting the at least one packer to isolate a zone of a formation surrounding the completion assembly after closing the flow of the fluid through the tubular; and
supplying a treatment fluid to the isolated zone via the frac sleeve to treat the isolated zone.
19. The method of claim 10 further comprising permanently closing the fluid flow path after the selected number of cycles.
Priority Applications (2)
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US14/530,394 US9708888B2 (en) | 2014-10-31 | 2014-10-31 | Flow-activated flow control device and method of using same in wellbore completion assemblies |
PCT/US2015/057995 WO2016069863A1 (en) | 2014-10-31 | 2015-10-29 | Flow-activated flow control device and method of using same in wellbore completion assemblies |
Applications Claiming Priority (1)
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US14/530,394 US9708888B2 (en) | 2014-10-31 | 2014-10-31 | Flow-activated flow control device and method of using same in wellbore completion assemblies |
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US20160123113A1 true US20160123113A1 (en) | 2016-05-05 |
US9708888B2 US9708888B2 (en) | 2017-07-18 |
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US14/530,394 Active 2035-09-26 US9708888B2 (en) | 2014-10-31 | 2014-10-31 | Flow-activated flow control device and method of using same in wellbore completion assemblies |
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WO (1) | WO2016069863A1 (en) |
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US9708888B2 (en) | 2017-07-18 |
WO2016069863A1 (en) | 2016-05-06 |
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